 
            Residency training was created by a doctor addicted to cocaine
From National Library of Medicine: "The structure of modern residency programs in North America originated at Johns Hopkins Hospital during the last decade of the 19th century, under the aegis and influence of William Stewart Halsted. Halsted was a surgical innovator who greatly shaped surgical practice in the 20th
 
             
             
             
             
             
             
             
             
             
            